Elevator door system with laterally installed door knife

Abstract

An elevator door system comprises a laterally installed door knife located on a car door hanging plate, door lock wheels located on a landing door hanging plate, a fixing plate disposed in a middle of the car door hanging plate. The fixing plate is connected to a transmission belt, so that door hanging plates can be driven to move. A position-limit plate is disposed above the door knife, and the door knife is controlled by the position-limit plate to clamp door lock wheels. At the same time, the door lock wheels are connected to and open a door hanger via a bar. In order to take advantage of the room saved by laterally moving of the door knife, an addition sill and a brush whose lengths are fit for the door opening area are disposed on a car door sill to fill the space when door is opened.

Description

TECHNICAL FIELD[0001]The present disclosure relates to a major mechanism of an elevator, and particularly to an elevator door system with a laterally installed door knife.BACKGROUND OF THE PRESENT INVENTION[0002]In the prior art, the elevator door knife is fixed on a car door hanging plate of one of car doors in elevator and is located in a middle of a door opening area; and door lock wheels are opposite to the door knife and fixed on a landing door hanging plate above a landing door. When the elevator is running, the door knife clamps the door lock wheels, along with a driver of a car door drive motor, the car doors and the landing doors are opened together. In this way, the door knife and door lock wheels have to beyond the sill in door opening area, and in order to avoid collision between the car and the sill, a necessary gap for moving has to be added when the car moves up and down. Namely, there must be a certain distance between a car door sill and a landing door sill. However...

AI Technical Summary

Benefits of technology

The present patent provides an elevator door system with a laterally installed door knife that efficiently decreases the gap between the car door sill and the landing door sill in the door opening area. This system achieves improved security, reduces hidden dangers, and makes the door opening area more beautiful. Additionally, there is no need for the sill to retract when the elevator car moves up and down, so rub accidents will not increase. The cost of the technical solution is saved, implementation is more convenient, and the technical effect is improved elevator safety.

Problems solved by technology

However, the existence of this distance often leads to some undesirable accidents like that small cart, wheelchair wheel, high-heeled shoes, etc. are stuck, and that keys and bank cards are dropped into the elevator shaft through this gap.

However, this method will increase the mechanical and electrical structures, and hence increases fault points.

If the flap fails to retract in time when the elevator car is moving, it is prone to have rub accidents, so hidden dangers exist.

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